Burnham Indirect - Fired Water Heater AL SL - Manual (Page 14)

4
Low Voltage
120 Volts
L1 Hot
120 Volts
L2 Neutral
Circulator
24v
Temperature Differential
Pump/TT 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20°
15°
10°
5°
160°
150°
140°
130°
120°
110°
Probe
Switched Hot
® ®
T
T
Switching Relay
Transformer
Thermostat
Burner
TV W T
Z
C1 C2
L1 L2
B1 B2
120 Volt
Boiler
Circulator
Temperature Differential
Pump/TT 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20°
15°
10°
5°
160°
150°
140°
130°
120°
110°
Probe
® ®
Circulator & Burner Control Wiring Diagrams
Standard Wiring for Circulator with Boiler
Maintaining a Temperature of 0°
Wiring for Burner Control L4E